<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="100px"
      v-loading="formLoading"
    >
      <el-form-item label="班级ID" prop="classId" v-show="false">
        <el-input v-model="formData.classId"  />
      </el-form-item>
      <el-form-item label="选择教师" prop="teacherIds">

        <div class="flex flex-wrap gap-2">
          <div
            v-for="user in selectedUsers"
            :key="user.id"
            class="bg-gray-100 h-35px rounded-3xl flex items-center pr-8px dark:color-gray-600 position-relative"
          >
            <el-avatar class="!m-5px" :size="28" v-if="user.avatar" :src="user.avatar" />
            <el-avatar class="!m-5px" :size="28" v-else>
              {{ user.nickname.substring(0, 1) }}
            </el-avatar>
            {{ user.nickname }}
            <Icon
              icon="ep:close"
              class="ml-2 cursor-pointer hover:text-red-500"
              @click="handleRemoveUser(user)"
            />
          </div>
          <el-button type="primary" link @click="openUserSelect">
            <Icon icon="ep:plus" />选择教师
          </el-button>
        </div>
        <el-tooltip
          class="item"
          :content="'如果教师的职位不同，请分别添加'"
          effect="light"
          placement="top"
        >
          <Icon icon="ep:question-filled" class="ml-5px" />
        </el-tooltip>

        <!-- <el-select
        class="!w-full"
        v-model="formData.teacherId"
        clearable
        placeholder="请选择教师"
        >
        <el-option
          v-for="user in userList"
          :key="user.id"
          :label="user.nickname"
          :value="user.id"
        />
      </el-select> -->
      </el-form-item>
      <el-form-item label="教师职务" prop="post">
        <el-select v-model="formData.post" placeholder="请选择教师职务">
          <el-option
            v-for="dict in getIntDictOptions(DICT_TYPE.SCHOOL_TEACHER_POST)"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>

   <!-- 用户选择弹窗 -->
  <UserSelectForm
    ref="userSelectFormRef"
    isInitGet
    notSuccessMessage
    @confirm="handleUserSelectConfirm"
  />

</template>
<script setup lang="ts">
import { getIntDictOptions, DICT_TYPE } from '@/utils/dict'
import { ClassesTeacherApi, ClassesTeacherVO } from '@/api/school/classes/teacher'
import { UserVO } from '@/api/system/user'

/** 班级和老师关联 表单 */
defineOptions({ name: 'ClassesTeacherForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData = ref({
  id: undefined,
  classId: 0,
  teacherId: undefined,
  teacherIds: [],
  post: undefined,
})
const formRules = reactive({
  classId: [{ required: true, message: '班级ID不能为空', trigger: 'blur' }],
  teacherIds: [{ required: true, message: '教师不能为空', trigger: 'blur' }],
  post: [{ required: true, message: '教师职务不能为空', trigger: 'change' }],
})
const formRef = ref() // 表单 Ref
// const userList = ref<UserApi.UserVO[]>([]) // 用户列表

const selectedUsers = ref<UserVO[]>([])
const userSelectFormRef = ref()

/** 处理用户选择确认 */
const handleUserSelectConfirm = (_, users: UserVO[]) => {
  selectedUsers.value = users || []
}

/** 打开人员选择 */
const openUserSelect = () => {
  userSelectFormRef.value.open(0, selectedUsers.value)
}

/** 移除人员 */
const handleRemoveUser = (user: UserVO) => {
  selectedUsers.value = selectedUsers.value.filter((userItem: any) => userItem.id !== user.id)
}


/** 打开弹窗 */
const open = async (type: string, id?: number, classId?: number) => {
  dialogVisible.value = true
  dialogTitle.value = t('action.' + type)
  formType.value = type
  resetForm()

  if (classId) {
    formData.value.classId = classId
  }

  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      formData.value = await ClassesTeacherApi.getClassesTeacher(id)
    } finally {
      formLoading.value = false
    }
  }

  // 加载用户列表
  // userList.value = await UserApi.getSimpleUserList()
}

watch(
  () => {
    return {
      formData: formData.value,
      userList: userSelectFormRef.value?.userList
    }
  },
  ({ formData, userList }: any) => {
    if (formData?.userIds?.length && userList?.length) {
      // 设置选中人员
      selectedUsers.value = userList.filter((userItem: any) =>
        formData.userIds.includes(userItem.id)
      )
    }
  },
  {
    deep: true
  }
)

defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  //先赋值，再校验表单
  const userIds: any = selectedUsers.value?.map((user: any) => user.id)
  formData.value.teacherIds = userIds
  // 校验表单
  await formRef.value.validate()
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value as unknown as ClassesTeacherVO
    if (formType.value === 'create') {
      await ClassesTeacherApi.createClassesTeacher(data)
      message.success(t('common.createSuccess'))
    } else {
      await ClassesTeacherApi.updateClassesTeacher(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    classId: 0,
    teacherId: undefined,
    teacherIds: [],
    post: undefined,
  }
  formRef.value?.resetFields()
  //清空人员选择器
  selectedUsers.value = []
}
</script>